
Specification for airbricks and gratings for wall ventilation.
NORM herausgegeben am 14.12.1970
Designation standards: BS 493:1970
Note: UNGÜLTIG
Publication date standards: 14.12.1970
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: British technical standard
Kategorie: Technische Normen BS